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Jane was sleeping for a thousand years.
Jane fell asleep on April 15, 1912 (Not 1914, as previously thought due to typo)
Logically the year should be AFTER 2912.
April 15, 1912 is the date the titanic sunk, and the titanic was confirmed as part of the ARG by @Tildo and also with the boat and iceberg evidence.
Bess (Commonly known as Ms B): Was Jane's best friend, but it is unknown what has happened to her. Some theories suggest she has died. Some suggest she was a monster and/or replaced the original Bess. Evidence points to the theory that although Bess and Jane were best friends something tore them apart.
Jane: Thought to be the "Main Character" in the ARG, the story mainly focuses on her journal entries, although not all of them have been recovered. Evidence concludes that she was put into and kept in sleep for 1000 years (roughly?) and she had woke up, surpassing (outliving) everyone else. She fell asleep on April 15, 1912 (Titanic Sank) and woke up in approximately the year 2912, and her current whereabouts are unknown.
Theories about her are to inconclusive to describe in detail, although much of her story can be gleaned from reading her journal entries, three of which are available outright in the Original Game.
Ednom: The only other character mentioned outright by @Tildo is Ednom (or as signed on the wall, "-Ed") Not much is known about him, and it is suggested he is dead, but speculated he is alive and/or somehow involved in the "Tragedy" Theories about him are not very conclusive, but it is thought that he could be evil, Jane's father, or his name could mean something.
Kefw: Seen in-game as a "monster" or a black specter which sings a song (Although it is unknown that the song has any significance) Kefw is a Vignere of Bess and Jane which which helped us find the name "Bess". It is thought that Kefw IS Bess, but there is currently no evidence mentioning Kefw.
Village: Known that Jane lived in a village, and a dark forest appeared near the village.
"Them": Jane mentions "One of them cut her" along with her feeling unwell, visual disorientation, and hospitalization. What/who are them?
ITEMS AND ROOMS:
Crystal Key: A key found when splashing Kefw with water, this key unlocks Room 10 and "It's name unlocks more than [it]" Using the passcode "crystalkey" in a Vignere uncoded several Vignere ciphers ingame.
Canteen: Used to "remove" Kefw from the game, it had a note attached to it that told us that Janes journal had been scattered.
Jane's house/key: Janes house is now in ruins and her key, (Which has a cipher which says "Janes House" on it) was found in a pile of dirt. We can assume that in game we are on her property. but we do not know the whereabouts of the village and/or the dark forest.
In Janes house there are a few items (Rope, Canteen) Along with writing on the wall.
Stool and Rope: Found together, suggest that someone may have tied someone else down to the stool. The rope is used to climb into the tower.
Room 10: Called room 10 because it is backdrop 10 in the code, it is a red room with "See Inside" written in hexadecimal on the wall. In chronological order it had in it: There was a ship and a iceberg, but then then the iceberg was replace by a doll and a picture of "Family". Finally, a red stain, blood, was added to the floor. There are also two journal entries.
The Tower: Filled with "Hints" that have not been solved except the hint that led to @iwvm. In it we also found a journal entry.
Outside: A few signs with ciphers on them are found outside, along with both keys. After approaching room 10 for the first time, if you head back and exit Jane's house from the front, you can hear Kefw's song in the wind, which grows louder the closer you are. Other than that, and ambient wind sound is all you hear.